When guns are removed from a society, a number of things happen. First, the criminals realize they have nothing to fear. Then, the disarmed population become their helpless prey. After that, the government realizes they have nothing to fear by looting and oppressing the people, so the government follows suit. Finally, the people dominating the government decide which cultural and racial groups are the useless eaters, and wholesale genocide ensues.
This general pattern has repeated over and over again.
Because of the crime and misery and suffering that gun confiscation and prohibition causes, the US Constitution itself makes gun control a crime.